백준 2588 자릿수에 맞추어 곱셈 계산하기

import java.util.*;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        
        int a = sc.nextInt();
        int b = sc.nextInt();
        
        System.out.println(a*(b%10));
        System.out.println(a*(b%100/10));
        System.out.println(a*(b/100));
        System.out.println(a*b);
    }
}

https://www.acmicpc.net/problem/2588

2588번: 곱셈